removed unsupported symfony versions

Author: agrzegorzewski

composer.json

@@ -14,12 +14,12 @@
     "require": {
         "php": ">=7.2",
         "bugsnag/bugsnag": "^3.29.0",
-        "symfony/config": "^2.7|^3|^4|^5|^6|^7|^8",
-        "symfony/console": "^2.7|^3|^4|^5|^6|^7|^8",
-        "symfony/dependency-injection": "^2.7|^3|^4|^5|^6|^7|^8",
-        "symfony/http-foundation": "^2.7|^3|^4|^5|^6|^7|^8",
-        "symfony/http-kernel": "^2.7|^3|^4|^5|^6|^7|^8",
-        "symfony/security-core": "^2.7|^3|^4|^5|^6|^7|^8"
+        "symfony/config": "^5|^6|^7|^8",
+        "symfony/console": "^5|^6|^7|^8",
+        "symfony/dependency-injection": "^5|^6|^7|^8",
+        "symfony/http-foundation": "^5|^6|^7|^8",
+        "symfony/http-kernel": "^5|^6|^7|^8",
+        "symfony/security-core": "^5|^6|^7|^8"
     },
     "require-dev": {
         "graham-campbell/testbench-core": "^1.1",